C96.6

Billable

Unifocal Langerhans-cell histiocytosis

C96.6 is the ICD-10-CM code for Unifocal Langerhans-cell histiocytosis. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
C00-D49
Parent
C96
Edition
FY2026

C00-D49 Neoplasms

Includes

  • Eosinophilic granuloma
  • Histiocytosis X, unifocal
  • Histiocytosis X NOS
  • Langerhans-cell histiocytosis NOS

Excludes1 — not coded here

  • multifocal and multisysemic (disseminated) Langerhans-cell histiocytosis (C96.0)
  • multifocal and unisystemic Langerhans-cell histiocytosis (C96.5)

Frequently asked questions

What is ICD-10 code C96.6?
C96.6 is the ICD-10-CM code for "Unifocal Langerhans-cell histiocytosis". It falls under C00-D49 Neoplasms.
Is C96.6 a billable code?
Yes — C96.6 is a billable, specific ICD-10-CM code valid for reimbursement.
What is excluded from C96.6?
Excludes1 (not coded here): multifocal and multisysemic (disseminated) Langerhans-cell histiocytosis (C96.0); multifocal and unisystemic Langerhans-cell histiocytosis (C96.5).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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